Biologically-stable sludge and air-permeable potted plant container combined tree cultivation method

Abstract

The invention relates to the technical field of stock growing, in particular to a biologically-stable sludge and air-permeable potted plant container combined tree cultivation method. The method includes the following steps of firstly, preparing cultivation soil and enabling the cultivation soil to serve as soil for cultivation in an air-permeable potted plant container, wherein according to all components in the cultivation soil and the weight ratio of all the components, the weight ratio of sludge to auxiliary materials ranges from 3:7 to 8:2, and one or more of straw, saw dust, plowing soil and sandy soil are mixed to form the auxiliary materials; secondly, regulating the pH value, the moisture content and the salt content index of the cultivation soil; thirdly, planting saplings into the cultivation soil, and conducting micro-irrigation on the cultivation soil. According to the biologically-stable sludge and air-permeable potted plant container combined tree cultivation method, sludge products are used, the survival rate of tree transplantation is greatly improved, the problem of the final purpose of the sludge products is thoroughly solved, and comprehensive benefits are obtained on the aspects of pollution eradication, resource reuse, landscaping and the like.

Description

technical field [0001] The invention relates to the technical field of nursery stock cultivation, in particular to a method for growing trees by combining bio-stabilized sludge and a permeable potted container. Background technique [0002] In recent years, my country's urban sewage treatment business has developed rapidly, and the annual sewage volume has reached 42 billion cubic meters, ranking first in the world. However, the activated sludge produced by sewage treatment has not been effectively disposed of. According to statistics, my country's sludge output is about 30 million tons per year, about 70% of which are landfilled or simply piled up, which poses a serious hidden danger of secondary pollution. According to international experience and development trend, biomass energy utilization and land utilization of sludge are the best ways for sludge disposal. Theoretically speaking, after anaerobic digestion or aerobic fermentation, sludge can be made into organic fert...

AI Technical Summary

Problems solved by technology

[0004] However, there are still bottlenecks in the application of sludge greening fertilizers. First, nurseries are also arable land in principle, and may also be replanted with food and vegetables. The agricultural sector also restricts the use of sludge products; second, sludge products must be made by adding nitrogen, phosphorus, and potassium. Only compound fertilizers can be sold, the cost is high, and the sales are not smooth; the third is that the topdressing fertilizer for landscaping is very seasonal, and the amount is limited. It is difficult to absorb a large amount of sludge products that are continuously produced only by making fertilizer

[0005] Therefore, it is a feasible direction to use sludge products as basal fertilizer or cultivation soil for landscaping, but there are still problems in this way at present, namely: although the sludge products have been stabilized by anaerobic or aerobic treatment, However, this treatment method is not thorough. When a large amount of sludge products are used as cultivation soil, there is still a post-stabilization fermentation process.